Flow of dense avalanches past obstructions
One means of preventing areas from being hit by avalanches is to divert the flow by straight or curved walls or tetrahedral or cylindrical-type structures. Thus, there arises the question how a given avalanche flow is changed regarding the diverted-flow depth and flow direction. In this paper a repo...
Published in: | Annals of Glaciology |
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Online Access: | https://research.manchester.ac.uk/en/publications/ea2688a1-f146-4898-8f88-fc70e2e2cac5 https://doi.org/10.3189/172756401781819166 |
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ftumanchesterpub:oai:pure.atira.dk:publications/ea2688a1-f146-4898-8f88-fc70e2e2cac5 2023-11-12T04:01:22+01:00 Flow of dense avalanches past obstructions Tai, Y. C. Gray, J. M N T Hutter, K. Noelle, S. 2001 https://research.manchester.ac.uk/en/publications/ea2688a1-f146-4898-8f88-fc70e2e2cac5 https://doi.org/10.3189/172756401781819166 eng eng info:eu-repo/semantics/closedAccess Tai , Y C , Gray , J M N T , Hutter , K & Noelle , S 2001 , ' Flow of dense avalanches past obstructions ' , Annals of Glaciology , vol. 32 , pp. 281-284 . https://doi.org/10.3189/172756401781819166 article 2001 ftumanchesterpub https://doi.org/10.3189/172756401781819166 2023-10-30T09:13:25Z One means of preventing areas from being hit by avalanches is to divert the flow by straight or curved walls or tetrahedral or cylindrical-type structures. Thus, there arises the question how a given avalanche flow is changed regarding the diverted-flow depth and flow direction. In this paper a report is given on laboratory experiments performed for gravity-driven dense granular flows down an inclined plane obstructed by plane wall and tetrahedral wedge. It was observed that these flows are accompanied by shocks induced by the presence of the obstacles. These give rise to a transition from super-to subcritical flow of the granular avalanche, associated with depth and velocity changes. It is demonstrated that with an appropriate shock-capturing integration technique for the Savage-Hutter theory, the shock formation for a finite-mass granular flow sliding from an inclined plane into a horizontal run-out zone is well described, as is the shock formation of the granular flow on either side of a tetrahedral protection structure. Article in Journal/Newspaper Annals of Glaciology The University of Manchester: Research Explorer Annals of Glaciology 32 281 284 |
institution |
Open Polar |
collection |
The University of Manchester: Research Explorer |
op_collection_id |
ftumanchesterpub |
language |
English |
description |
One means of preventing areas from being hit by avalanches is to divert the flow by straight or curved walls or tetrahedral or cylindrical-type structures. Thus, there arises the question how a given avalanche flow is changed regarding the diverted-flow depth and flow direction. In this paper a report is given on laboratory experiments performed for gravity-driven dense granular flows down an inclined plane obstructed by plane wall and tetrahedral wedge. It was observed that these flows are accompanied by shocks induced by the presence of the obstacles. These give rise to a transition from super-to subcritical flow of the granular avalanche, associated with depth and velocity changes. It is demonstrated that with an appropriate shock-capturing integration technique for the Savage-Hutter theory, the shock formation for a finite-mass granular flow sliding from an inclined plane into a horizontal run-out zone is well described, as is the shock formation of the granular flow on either side of a tetrahedral protection structure. |
format |
Article in Journal/Newspaper |
author |
Tai, Y. C. Gray, J. M N T Hutter, K. Noelle, S. |
spellingShingle |
Tai, Y. C. Gray, J. M N T Hutter, K. Noelle, S. Flow of dense avalanches past obstructions |
author_facet |
Tai, Y. C. Gray, J. M N T Hutter, K. Noelle, S. |
author_sort |
Tai, Y. C. |
title |
Flow of dense avalanches past obstructions |
title_short |
Flow of dense avalanches past obstructions |
title_full |
Flow of dense avalanches past obstructions |
title_fullStr |
Flow of dense avalanches past obstructions |
title_full_unstemmed |
Flow of dense avalanches past obstructions |
title_sort |
flow of dense avalanches past obstructions |
publishDate |
2001 |
url |
https://research.manchester.ac.uk/en/publications/ea2688a1-f146-4898-8f88-fc70e2e2cac5 https://doi.org/10.3189/172756401781819166 |
genre |
Annals of Glaciology |
genre_facet |
Annals of Glaciology |
op_source |
Tai , Y C , Gray , J M N T , Hutter , K & Noelle , S 2001 , ' Flow of dense avalanches past obstructions ' , Annals of Glaciology , vol. 32 , pp. 281-284 . https://doi.org/10.3189/172756401781819166 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.3189/172756401781819166 |
container_title |
Annals of Glaciology |
container_volume |
32 |
container_start_page |
281 |
op_container_end_page |
284 |
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1782332440480579584 |